diff options
| -rw-r--r-- | arch/ppc64/kernel/setup.c | 32 | ||||
| -rw-r--r-- | arch/ppc64/kernel/udbg.c | 51 | ||||
| -rw-r--r-- | include/asm-ppc64/udbg.h | 6 |
3 files changed, 50 insertions, 39 deletions
diff --git a/arch/ppc64/kernel/setup.c b/arch/ppc64/kernel/setup.c index 059cca2e2538..aff408bffdd5 100644 --- a/arch/ppc64/kernel/setup.c +++ b/arch/ppc64/kernel/setup.c @@ -108,7 +108,6 @@ int boot_cpuid = 0; int boot_cpuid_phys = 0; dev_t boot_dev; u64 ppc64_pft_size; -u64 ppc64_debug_switch; struct ppc64_caches ppc64_caches; EXPORT_SYMBOL_GPL(ppc64_caches); @@ -154,34 +153,6 @@ struct screen_info screen_info = { .orig_video_points = 16 }; -/* - * Initialize the PPCDBG state. Called before relocation has been enabled. - */ -void __init ppcdbg_initialize(void) -{ - ppc64_debug_switch = PPC_DEBUG_DEFAULT; /* | PPCDBG_BUSWALK | */ - /* PPCDBG_PHBINIT | PPCDBG_MM | PPCDBG_MMINIT | PPCDBG_TCEINIT | PPCDBG_TCE */; -} - -/* - * Early boot console based on udbg - */ -static struct console udbg_console = { - .name = "udbg", - .write = udbg_console_write, - .flags = CON_PRINTBUFFER, - .index = -1, -}; -static int early_console_initialized; - -void __init disable_early_printk(void) -{ - if (!early_console_initialized) - return; - unregister_console(&udbg_console); - early_console_initialized = 0; -} - #if defined(CONFIG_PPC_MULTIPLATFORM) && defined(CONFIG_SMP) static int smt_enabled_cmdline; @@ -630,8 +601,7 @@ void __init setup_system(void) /* * Register early console */ - early_console_initialized = 1; - register_console(&udbg_console); + register_early_udbg_console(); /* Save unparsed command line copy for /proc/cmdline */ strlcpy(saved_command_line, cmd_line, COMMAND_LINE_SIZE); diff --git a/arch/ppc64/kernel/udbg.c b/arch/ppc64/kernel/udbg.c index 07164020f3a9..ed6766e21f5a 100644 --- a/arch/ppc64/kernel/udbg.c +++ b/arch/ppc64/kernel/udbg.c @@ -14,6 +14,7 @@ #include <linux/config.h> #include <linux/types.h> #include <linux/sched.h> +#include <linux/console.h> #include <asm/ppcdebug.h> #include <asm/processor.h> @@ -21,6 +22,7 @@ void (*udbg_putc)(unsigned char c); unsigned char (*udbg_getc)(void); int (*udbg_getc_poll)(void); +/* udbg library, used by xmon et al */ void udbg_puts(const char *s) { if (udbg_putc) { @@ -75,11 +77,6 @@ int udbg_read(char *buf, int buflen) return i; } -void udbg_console_write(struct console *con, const char *s, unsigned int n) -{ - udbg_write(s, n); -} - #define UDBG_BUFSIZE 256 void udbg_printf(const char *fmt, ...) { @@ -92,6 +89,10 @@ void udbg_printf(const char *fmt, ...) va_end(args); } +/* PPCDBG stuff */ + +u64 ppc64_debug_switch; + /* Special print used by PPCDBG() macro */ void udbg_ppcdbg(unsigned long debug_flags, const char *fmt, ...) { @@ -131,3 +132,43 @@ unsigned long udbg_ifdebug(unsigned long flags) { return (flags & ppc64_debug_switch); } + +/* + * Initialize the PPCDBG state. Called before relocation has been enabled. + */ +void __init ppcdbg_initialize(void) +{ + ppc64_debug_switch = PPC_DEBUG_DEFAULT; /* | PPCDBG_BUSWALK | */ + /* PPCDBG_PHBINIT | PPCDBG_MM | PPCDBG_MMINIT | PPCDBG_TCEINIT | PPCDBG_TCE */; +} + +/* + * Early boot console based on udbg + */ +static void udbg_console_write(struct console *con, const char *s, + unsigned int n) +{ + udbg_write(s, n); +} + +static struct console udbg_console = { + .name = "udbg", + .write = udbg_console_write, + .flags = CON_PRINTBUFFER, + .index = -1, +}; + +void __init disable_early_printk(void) +{ + unregister_console(&udbg_console); +} + +/* called by setup_system */ +void register_early_udbg_console(void) +{ + register_console(&udbg_console); +} + +#if 0 /* if you want to use this as a regular output console */ +console_initcall(register_udbg_console); +#endif diff --git a/include/asm-ppc64/udbg.h b/include/asm-ppc64/udbg.h index 2cf1e87fd7d2..c786604aef02 100644 --- a/include/asm-ppc64/udbg.h +++ b/include/asm-ppc64/udbg.h @@ -2,6 +2,7 @@ #define __UDBG_HDR #include <linux/compiler.h> +#include <linux/init.h> /* * c 2001 PPC 64 Team, IBM Corp @@ -20,12 +21,11 @@ extern void udbg_puts(const char *s); extern int udbg_write(const char *s, int n); extern int udbg_read(char *buf, int buflen); -struct console; -extern void udbg_console_write(struct console *con, const char *s, unsigned int n); +extern void register_early_udbg_console(void); extern void udbg_printf(const char *fmt, ...); extern void udbg_ppcdbg(unsigned long flags, const char *fmt, ...); extern unsigned long udbg_ifdebug(unsigned long flags); - +extern void __init ppcdbg_initialize(void); extern void udbg_init_uart(void __iomem *comport, unsigned int speed); #endif |